Look at the history for a total of several thousands year.since ancient times, man has tried to measure time, first with day and night lights and stars,and then with the help of primitive devices and finally using the most advanced sophisticated methods of modernity, electronics and nuclear physics.
The history of the clock is a continues improvement in the accuracy of the time measurement.In ancient Egypt, time was measured in days and it is credible that it was divided into twl periods of 12 hours.There is also evidence that the modern hexadecimal measurement model came from the sumerian kingdom in 2000BC.
It is generally accepted that the history of the creation of clocks begain with the invention of a chandelier or gnomon.with such a clock, it seemed that only daylight could be measured, because of the principle of their action was based on the dependence of the position of the sun on the length of shadow.
The history of making water clock in ancient persia and china dates backs to 2500-1600BC. From there mostly with merchants, the water clock was brought to Egypt and Greece.
A fire watch was used jn china about 3000years ago during the regin of the first emperer of this country called Pho -hee.there were widespread watches in japan and persia.
The creation of the clock dates back to the time of Archimedes, who learned from the 3rd century BC.Ancient Greece has long been considered the site id their discovery, however, some archaeological finds suggest that the first hours were made by the inhabitants of the middle East.
The history of the creation of the first mechanical clocks begain in china in 725 AD and is a significant event in the history of development of watches.
Once electricity was invented, the history of electric clock invented in the mid -19century began. The creation and further development of electric watches puts and end to the difficulty of the time synchronization in different parts of the world.
In 1847, the world provided and electric clock made by the Englishman payne, which was based on the following principle.the pendulum swing through an electromagnetic closes the contact from time to time, and the electromagnetic counter, connected by a clockwise arm by a gear system, reads and summarizes the number of oscillation.
In 1955, the history of the development of clocks took sharp turn. Britain's Louis essan announces construction of the first atomic clock on cesium -133.
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